#### Renamed Functions

* **Headers.of()**: for symmetry with `listOf()`, `setOf()`, etc., we’ve replaced
  `Headers.of(String...)` with `headersOf(vararg String)`.

#### Extension Functions

We’ve migrated from static functions to extension functions where we think they fit.

| Java                                | Kotlin                          |
| :---------------------------------- | :------------------------------ |

	for _, e := range includes {
		if len(e) == 0 {
			return nil, config.ErrInvalidCompressionIncludesValue(nil).Msg("extension/mime-type cannot be empty")
		}
		if e == "/" {
			return nil, config.ErrInvalidCompressionIncludesValue(nil).Msg("extension/mime-type cannot be '/'")
		}
	}
	return includes, nil
}

// LookupConfig - lookup compression config.

Si abres la documentación automática de la API, tu extensión aparecerá en la parte inferior de la *path operation* específica.

<img src="/img/tutorial/path-operation-advanced-configuration/image01.png">

Y si ves el OpenAPI resultante (en `/openapi.json` en tu API), verás tu extensión como parte de la *path operation* específica también:

```JSON hl_lines="22"
{
    "openapi": "3.1.0",

import okhttp3.tls.HeldCertificate
import org.junit.jupiter.api.Assertions.assertEquals
import org.junit.jupiter.api.BeforeEach
import org.junit.jupiter.api.Disabled
import org.junit.jupiter.api.Test
import org.junit.jupiter.api.extension.RegisterExtension
import org.openjsse.sun.security.ssl.SSLSocketFactoryImpl
import org.openjsse.sun.security.ssl.SSLSocketImpl

class OpenJSSETest {
  @JvmField @RegisterExtension
  var platform = PlatformRule()

import mockwebserver3.junit5.StartStop
import okhttp3.testing.PlatformRule
import org.junit.jupiter.api.AfterEach
import org.junit.jupiter.api.BeforeEach
import org.junit.jupiter.api.Test
import org.junit.jupiter.api.extension.RegisterExtension

class SocksProxyTest {
  @RegisterExtension
  val platform = PlatformRule()

  @RegisterExtension
  val clientTestRule = OkHttpClientTestRule()

  @StartStop

 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package gradlebuild.pluginpublish.extension

import org.gradle.plugin.devel.GradlePluginDevelopmentExtension


abstract class PluginPublishExtension(
    private val gradlePlugin: GradlePluginDevelopmentExtension
) {

 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */
package org.apache.maven.cli.internal.extension.model;

import java.io.Serializable;
import java.util.ArrayList;
import java.util.List;

/**
 * Extensions to load.
 *
 * @deprecated Use {@link org.apache.maven.api.cli.extensions.CoreExtension} instead

 * This API does not try to cover all the requirements out there, just the basic ones, and is intentionally simple.
 * If plugin or extension needs anything more complex feature wise (i.e. HTTP range support or alike) it should
 * probably roll its own.
 * <p>

 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package gradlebuild.testcleanup.extension

import org.gradle.api.file.DirectoryProperty
import org.gradle.api.provider.Property


/**
 * Works with {@see TestFilesCleanupService} and {@see TestFilesCleanupServiceRootExtension}.

 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package gradlebuild.jvm.extension

import org.gradle.api.tasks.TaskContainer
import org.gradle.api.tasks.compile.JavaCompile
import org.gradle.kotlin.dsl.*


/**
 * Strict compilation options honored by [gradlebuild.Strict_compile_gradle].